Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Lance Aaron O'Connor, DC

Individual provider Rehabilitation Chiropractor · NPI 1417159419

Dr. Lance Aaron O'Connor, DC is a Chiropractic in Santa Rosa, California. Graduated from Palmer College Chiropractic - West Sunnyvale in 1992, 34 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
34
Trained at
Palmer College Chiropractic - West Sunnyvale
Licensed in
CA
In the registry since
2007
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

910 Vallejo St
Santa Rosa, CA 95404-5115
Phone: (707) 525-9111
Fax: (707) 526-9374
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rehabilitation Chiropractor (primary) Taxonomy 111NR0400X · Licence DC22107 (CA)

Record details

NPI number1417159419
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorYes
NPI enumeratedJune 1, 2007
Last updated in NPPESJune 1, 2022
Certification dateJune 1, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCHIROPRACTIC
Medical schoolPALMER COLLEGE CHIROPRACTIC - WEST SUNNYVALE
Graduated 1992 (34 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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